Turbine-driven locomotive



F. LJ UNGSTROM. TURB-INEDRIVEN LOCOMOTIVEL APPLICATION FILED OCT.19,1921.

Patented Nov. 28, 1922- l'zz/v eluhl? To all whom it may concern:

Patented Nev. as, ieza.

arr 1 s FREDBIK LJUNGSTRfiM, OF BREVIK, LIDINGON, SVJ'EDEN, ASSIGNOR TOAKTIEBOLAGET LJ'UNGSTRGlVLSTANGTURBIN, O35 .STOCI KHOLM, SWEDEN, ACORPORATION.

TURBINE-DEITJEN noooivrorivn.

' Application filed October 1e, 1921.] Serial in). 508,895.

LJUNG- s'rRoM, chief engineer, a sub ect of the King of Sweden, residingat Brevik, Lidlngon,

Be it known that I, Fnnnnin Sweden, have invented certain new and useful Improvements in Turbine-Driven Locomotives, of which the followingis a specification.

r In turbine driven locomotives it has always been connected withdifficulties to arrange the steam conduits in a satisfactory manner,said difhculties being particularly prominent in case of each of thesteam boiler and the condenser being placed on a separate carriage,since in such case the steam con.- duit or conduits disposed between thecarriages are compelled .to effect a springy or articulate movement. Theturbine has pref erably been placed oh the condenser carriage, and bythis the advantage has been obtained that the said movement of the steamconduit between the two carriages can be effected in,the high pressuresteam conduit between the steam boiler and the turbine which conduit hasa considerably smaller diameter than the waste steam out let conduit. Incase the transmission of power is effected electrically, it has beenpossible to connect the latter conduit directly to the condenser, and atthe same time the driving shaft of the steam turbine has been capable ofbeing connected immediately to the electric generator. Besides, inlocomotives in which the transmission of power from the turbine to thedriving wheels is effected directly by means of toothed gearing andconnecting rodsit has proved diflicult to eliminate the stressesoccurring in the gearing and the turbine owing to the reciprocatingcrank movement, in case the turbine be rigidly connected with thecondenser. Said stresses effected by the crank motion cause tensions andunequal engage ment of tooth and gearing and may be regearing and thecasing enclosing the same movably, for instance on the frame, theobliquely acting forcesbeing however transmitted to the turbine and itstoothed wheels, unless the turbine, for instance by the arrangement of ajoint in the outlet conduit to the condenser, be permitted to follow allthe movements of the gear.

This invention relates to a device the object of which is to preventsuch obliquely acting forces in the turbine and consists in thls v1z.,that the turbine is rigidly connected with the condenser but in fienibleconnection with the driving wheels] A preferred embodiment of theinvention is illustrated in the accompanying drawings in which-- Fig. lis an end view of a condenser en riage, aportion of the frame beingbroken away. Fig. 2 is aside view of the condenser carriage and Fig.3shows a detail on,

an enlarged scale.

Referring to the drawings, the ,main turbine 1 is rigidly connected withthe condenser which in this case, consists of a water tank 2 and anair-cooled part 2 supported directly by a frame 3. The turbine 1 is bymeans of a toothed gearing connected with the'cranks and the connectingrods actuating the driving wheels. The casing 4 enclosing and supportingthe toothed gearing is mounted on the frame 5 forming a part ofthe frame3 in such manner that the casing t is movable to a certain extent, whichresult is effected in known manner by double journalling of the crankshaft 8 of the gear- The shaft of the turbine 1 is by means of adiaphragm coupling 6 connected with the first pinion 7 of the gearing,and owing to this coupling the casing 4L- together with all the toothedwheels may be adjusted inde pendently of the turbine so as to effectequal pressure on the teeth without obliquely acting stresses beingtransmitted to the turbineQ i of the turbine with the gearing by meansof a diaphragm coupling. Inthis figure, 10 indicates the turbine shaft,6 a diaphragm coupling connecting the turbine shaft 10 with the one endof a shaft 12 passing freely through the pinion 7. The other end of tthe shaft 12 isby means of a diaphragm coupling 13 connected with ahollow shaft 14: to which the toothedwheel 7 is rigidly attached. inthismanner the wheel 7 i may follow the different movements of the othergear Wheels without interfering with the turbine which may be rigidlyattached.

Other arrangements to effect the movable connection of the turbine withthe toothed gearing or the driving wheels than that shown in the drawingare possible. Thus for instance joints or the like may be discipie ofthe invention.

What I claim new and desire to secure by Letters Patent of the UnitedStates is :6

i. In turbine driven locomotives in which mow en'f; is transmitted fromthe turbine to the driving Wheels by means of crank, connecting rod andintermediate driving device and in which a condenser is placed on e.Carriage, separate from the boiler carriztge, the arrangement that theturbine is rigidly connected to the condenser but flexibly connectedwith the driving device.

2. An arrangement according tocleim l characterized in that part of thecondenser to which the turbine is rigid y connected, consists of a watertank.

An arrangement ziccoidingto claim 1., in which the turbine isniountednbove a toothed gearing connectin it with the driving Wheels,characterized by the turbine being connected with the toothed gearing bymeans of a diaphragm coupling.

In testimony whereof I efiix my signature 25 in presence of twoWitnesses.

FREDRIK LJUN GSTROM. Witnesses Innz ROERSON, ERIC HALGII,

